The correct answer is: B. Baisakhi
Baisakhi is a major Sikh festival that marks the beginning of the harvest season. It is celebrated on the first day of the month of Vaisakh, which is the first month of the solar calendar used by the Sikhs. Baisakhi is a time for thanksgiving and celebration, and it is also a time to remember the sacrifices of the Sikh Gurus.
Lohri is a harvest festival celebrated by the people of Punjab, India. It is celebrated on the last day of the month of Magh, which is the last month of the winter season. Lohri is a time for bonfires, feasting, and dancing. It is also a time to remember the ancestors and to pray for the well-being of the family.
Gurpurab is a Sikh festival that celebrates the birth of Guru Nanak Dev Ji, the first Guru of the Sikhs. It is celebrated on the full moon day of the month of Vaisakh, which is the first month of the solar calendar used by the Sikhs. Gurpurab is a time for thanksgiving and celebration, and it is also a time to remember the teachings of Guru Nanak Dev Ji.
None of these is the correct answer.